How to make field mandatory

Question

Hi all,
i want to make price ,tax code and ware house code in purchase order rows mandatory.
i have designed following Stored procedure..
IF @transaction_type IN (N'A', N'U') AND
(@Object_type = N'22')
BEGIN
if exists (SELECT T0.docnum FROM [dbo].[OPOR] T0 INNER
JOIN [dbo].[POR1] T1 ON T1.DOCENTRY =
T0.docENTRY
WHERE   T1.[Price] = 0
and T1.DOCENTRY = @list_of_cols_val_tab_del)
select @Error = 1, @error_message =
'Enter Price'
else
if exists (SELECT T0.docnum FROM [dbo].[OPOR] T0 INNER
JOIN [dbo].[POR1] T1 ON T1.DOCENTRY =
T0.docENTRY
WHERE    T1.[TaxCode] is  null
and T1.DOCENTRY = @list_of_cols_val_tab_del)
begin
select @Error = 2, @error_message =
'Enter Tax Code'
end
else if exists (SELECT T0.docnum FROM [dbo].[OPOR] T0 INNER
JOIN [dbo].[POR1] T1 ON T1.DOCENTRY =
T0.docENTRY
WHERE    T1.[WhsCode] is  null
and T1.DOCENTRY = @list_of_cols_val_tab_del)
begin
select @Error = 3, @error_message =
'Enter Warehouse Code'
end
END
but system checks only for price and not for other two validation .
kindly suggest me way where system will check for all the validation defind in the Stored Procedure.

Answer 1

Hi Chetan
Try this, This should definitely work
if @object_type = '22' and @transaction_type in ('A','U')
begin
select @Total = (select T1.Price from OPOR T0 join POR1 T1 on T0.docentry = T1.docentry
where T0.docentry=cast(@list_of_cols_val_tab_del as int))
Select @comm = (select T1.TaxCode from OPOR T0 join POR1 T1 on T0.docentry = T1.docentry
where T0.docentry=cast(@list_of_cols_val_tab_del as int))
Select @venref = (select T1.TaxCode from OPOR T0 join POR1 T1 on T0.docentry = T1.docentry
where T0.docentry=cast(@list_of_cols_val_tab_del as int))
if @Total = 0
begin
set @Error =11
set @Error_Message = 'Cannot have Zero Price'
end
else
if @comm is null
begin
set @Error =12
set @Error_Message = 'Select Tax'
end
else
if @venref is null
begin
set @Error =13
set @Error_Message = 'Select Warehouse'
end
end
Regards
Reno